,.Ol'OC C 0 COOaOI:'fATION :::-a olT refer )bore, USik cover Wtl are .A?IAE- 5/EJR/vs -ROBERT C. BROWN DUICNAT'It AtrrBD OJ't'ICW OF RECORD OVPlClAL. rn ... co..r Air FenWPA~&.-uJUL U Mr. Mjles E. Goll U~!CLA~SiriED P . 0 BOX 216 -STAT I O N A COLUMDUS, OHIO Februar,y 4, 1953 \Tright-Pa tterson Air Force Base Attention Capt. E. J. Ruppelt Daar Mr. Goll: This letter c oncerns our examination of a sample handsd to me about a month ago by Capt. lolcGovern. This sample appeared to be ceramic in character, and vas reported to have been picked up at a location not indicated. It vas requested that a determination be made as to whether it was a synthetic material or whether it was or meteoric origin. Two polished surraces vere examined in reflected polarized light and two thin sections were studied in transmitted polarized light. Neither the texture nor the mineralogical composition of the specimen is comparable with the texture and mineralogical composition or known st.:>ll3' meteorites. On the other hand, this cursory cxwnination indicates that both texturally and mineralogically the specimen bears a strong resemblance to very basic slag from an open-hearth furnace. The five principal ph~ses in the specimen have been tentatively identified as tricalcium silicate, dicalcium silicate, calcium ferrite, ferrous oxide, and metallic iron. It is considered that these data fulfj]l the requirements of the request. Sincerely, Howard C. Cross In duolicate cc: t-'ajor L. G. Hhitcher To (Assignee) Mr. Miles E. Goll Receipt of Classified Material From (Sender) Wright-Patterson Air Force Base, Ohio Columbus, Ohio Attention A. B. Westerman Date Mailed Hand carriec Original to be signed personally by the recipient and returned to the sender. Duplicate to be retained by the recipient. Triplicate retained by sender for suspense file. In identifying material, avoid any refer.,ce which might cause the receipt to become classified. Dote of Doc. ReferWice or Description Ltr. of Trans. File No. Nature of copy: Mimeographed -------i and Series From Addressed t o Ho-ward C. Cross lUle s 1!;. Goll Att n Capt. Ruppclt Number of enclosures and attachments: I have personally received from the sender the material, including enclosures and attachments, as identified above. I assume full responsibility for the safe handling, storage, and transmittal elsewhere of this material in accordance with existing regulations. Date Received Po stol Registry Number Signature of Recipient .t,T A GREhTF.n S PEED, TRPtV:LI~!G THE 5:\ r::: ?Air., P1i.D CCt ' PLETi:.'LY DirJINic::JI~D I~l 1 . !It!. U!:AT!iER CLSAR VIS 6~ t~HLES SURFAC_ JlhD EP.ST 1:1 ::ILES, ::.: 1\TT)OL/\rlr. ;r-Lrrooprro cr. I TS CC'~!STAt:T I:~TZt!SITY i\t:D CLi'.RITY. T::::.R? '.JJ'.S t;c TAIL ArD rc SCUt"D Z A T(G JToTOi 0 PllOJEC'L' 10073 ,iOR.f.SHEET I. Gf!:NBRAL [ 9 1bkcd Eye I Ll Binocular~ D 'l'o lo!;cope r::ITh:aodoli to I 0 By T:ro Sat.1 I 0 By Thrae Set:J L- -A/C Observed Objoct, C J Intor ceptlon Atteu.pt,ed 1 Cl No Intercept Attempted . '"( . Yi~RE AIRCRAFT SCH.U.IBLED Tu IN'firrtCt;P'l"l J . DID OBJJ.:;C'f diANGE Diitr.:C'i'lUN AT ANY "'l'lt~? _ A/ C Scrrunbl ad 0 Viau3l Contact Made D A/I Cont3ct !Jade k.l ~lo Con t:.f.lct ?~do CJ Nor:n.ql lo. 'L.EtJatH OF i'IUE n~ =siGH"l l i 1-15 ~oconda [.J 1-5 l!inu tes . I II Over l.O l.ttnutos II. A.STRONOIICAL DATA { 14~=~.0 OBJEC'f HAVE A 'fAIL? . r-J Yos p llo I C Sunri:Ja !VSurt'lP.t III. AIHCRAF"f DA'tA Lv' ! 17. '.'IER~ AIRClL\F'f lHJ'1'1'..D I N Akr~A? :::J Yos 0 No I ' : Cbo Ai rcrnft